4. Doetsch, R. N., 1981. Determinative methods of light microscopy. V: Manual of methods for general bacteriology, American Society for Microbiology, Washington, 21‒23.
4. Doetsch, R. N., 1981. Determinative methods of light microscopy. V: Manual of methods for general bacteriology, American Society for Microbiology, Washington, 21‒23.